In electrical resistance welding, distortion results from the use of improper

A. Clamping methods

B. Electrodes

C. Current

D. Filler material

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  1. __________ of test specimens is not involved in any hardness testing method.
  2. Temper brittleness of a material can be fairly detected by the __________ test.
  3. The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation…
  4. Which of the following is not categorised as the ore agglomeration process?
  5. Corrosion rate cannot be lowered by reducing the __________ of the corroding medium.
  6. In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are…
  7. Cold chisel & hammers are made of
  8. For dynamic strain measurement, the Wheatstone bridge used is of __________ type.
  9. The materials which fracture even at small strains are termed as brittle, while those materials which…
  10. CANDU type nuclear reactor using natural uranium as fuel is the extensively used nuclear reactor because…
  11. Lead pencil contains
  12. Eutectic reaction for iron-carbon system occurs at a temperature of __________ °C.
  13. Which of the following gases cause global warming?
  14. A material subjected __________ must have high resilience.
  15. Suitability of steel for its use in cable is judged by its strength in
  16. Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?
  17. The product out from a cupola is called
  18. Satellites burn off during re-entry to earth's atmosphere, because of the
  19. Silicon in steel
  20. Quartz is a __________ material.
  21. Which of the following is an acidic constituent of B.F. slag?
  22. __________ has the highest melting point out of the following.
  23. The mechanism which changes the value of manipulated variable in response to the output signal from…
  24. Laser is a device to produce
  25. Encyclopaedia of Chemical Technology has been
  26. The dimensional formula of bulk modulus of elasticity is same as that of the
  27. Transformer cores are normally made from
  28. Pick out the wrong conversion of absolute & kinematic viscosities.
  29. Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same…
  30. In the diving apparatus, helium is used along with oxygen, because it is